Postfix Multiple Sending IP With Postfix 3 September 23, 2019 / December 22, 2019 by Philip Newman | Leave a Comment Situation:Your single mail server only has one IP and it has started getting blocked by some of the bigger players like Yahoo, Hotmail and Gmail. You know all your email being sent is legit but it’s still being blocked. You’ve slowed the rate of your outbound messages quite a bit… but your mail queue is […] Read more ยป